{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1931557",
    "entityType": "User",
    "nonce": "0x3b0a8ace225327db038fe8f30e52cb3acc9c9c8160d5b665425123b7c769d32f",
    "signature": "0x45284b20398343a1d071ae6454ba2c16bf2bbbf8b0a9dba5fc5065e5f3863afa174f0a0dd662e2ade30781a2abf31dfadde9e365b1e173e8ff9daefd814aa4631c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}